285040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{509}}^1$

素因数の和:529

約数の個数: 40

約数和(自身を含む): 758880

約数和(自身を除く): 473840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 509, 560, 1018, 2036, 2545, 3563, 4072, 5090, 7126, 8144, 10180, 14252, 17815, 20360, 28504, 35630, 40720, 57008, 71260, 142520, 285040]

約数ペア:

[(1, 285040), (2, 142520), (4, 71260), (5, 57008), (7, 40720), (8, 35630), (10, 28504), (14, 20360), (16, 17815), (20, 14252), (28, 10180), (35, 8144), (40, 7126), (56, 5090), (70, 4072), (80, 3563), (112, 2545), (140, 2036), (280, 1018), (509, 560)]